Leaf blade ovate to elliptic to subcircular to obovate, 1.6-4.5(-5.6) × as long as wide (in L. fasciculata, sometimes only distalmost 1 or 2 nodes with leaf blade linear to linear-lanceolate and 6-9.5 × as long as wide and others ovate to elliptic and 1.7-3 × as long as wide)